7012 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7012 CE/HCP4AQBCA
Basic Information
System of measurement
Metric
Weight
1.56 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
95 mm
Outside diameter tolerance
-0.004mm to 0
Width
72 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
25
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
10102 lbf
Radial static load rating
11475 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7012 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7012 CE/HCP4AQBCA is a high-precision quadruplex matched angular contact ball bearing designed for the most demanding applications. Engineered with a back-to-back (QBC) arrangement of four bearings, it delivers exceptional system rigidity and can accommodate combined radial and axial loads from both directions. The use of ceramic balls and a P4A super-precision tolerance ensures superior high-speed performance, minimal heat generation, and extended service life, making it ideal for ultra-precision, high-reliability machinery.
7012 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates the use of Hybrid Ceramic balls (Silicon Nitride), which reduce friction, lower operating temperature, and allow for higher speeds. |
| HC | Refers to the Hybrid Ceramic construction combining steel rings with ceramic balls. |
| P4A | Denotes a super-precision tolerance class with even tighter running accuracy than ABEC 7/P4, essential for high-precision spindles. |
| QBC | Specifies a Quadruplex (4-bearing) Back-to-Back matched set. This configuration provides maximum system rigidity and moment load capacity. |
7012 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly preloaded system that delivers unmatched stiffness, effectively resisting complex combined loads and moment loads encountered in high-performance applications.
- Superior High-Speed Performance: The combination of hybrid ceramic balls (lighter than steel, reducing centrifugal force) and a lightweight, robust phenolic resin cage enables a very high limiting speed of 34,000 rpm. This design minimizes friction and heat buildup.
- Precision and Longevity: Manufactured to P4A tolerance class and a 15° contact angle, this bearing ensures minimal runout and vibration. The open design with factory-applied lubrication is optimized for integration into centralized lubrication systems, promoting consistent performance.
- Thermal Stability: The ceramic balls have a lower coefficient of thermal expansion than steel, which helps maintain preload and accuracy over a wide temperature range (-30°C to 110°C).
7012 CE/HCP4AQBCA Bearing Typical Application Areas
This bearing is specifically engineered for high-end machinery requiring the ultimate in precision, speed, and rigidity. Key applications include:
- High-Frequency Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Grinding Spindles
- High-Speed Robotics and Automation (e.g., direct-drive motor applications)
- Advanced Aerospace and Defense Systems
- Medical and Dental Equipment Spindles
